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(No Model.)

B. J. Woon. HEATING APPARATUS POR DRYING HUUSES. No. 245,911.

Patented Aug. 16, 1881.

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Wzesses N. PETERS. Pnnxo-Lnmgnpher. wnhingim. l! C.

UNITED STATES PATENT OFFICE.

EDGAR J. WOOD, OF BROOKLYN, NEW YORK.

HEATING APPARATUS FOR DRYING-HOUSES.

SPECIFICATION forming part of Letters Patent No. 245,911, dated August16, 1881.

' Application filed June 16, M381.V (No model.)

I Brooklyn, in the county of Kings and State of New York, have inventedcertain new and use- DryingBooms or Drying-Houses for Lumber, of whichthe following is a specification.

My invention relates to drying rooms or houses for lumber in which airis circulated through the room or house by means of ablower and isheated by contact with suitably-arranged radiators, through whichsuperheatcd steam is passed.

The invention consists in certain novel features in the arrangement ofthe radiators for heating the air, and in a novel construction of the air-iiues or passages, whereby the distribution ot' air is regulated.

Theinvention also consists in various details of construction,hereinafter fully described.

In the accompanying drawings, Fignrel represents a plan and horizontalsection of a. drying house or room and appurtenances embodying myinvention. Fig. 2 represents a vertical longitudinal section thereofupon the dotted line Fig. l. Fig. 3 represents a vertical transversesection upon the dotted liney y, Fig. 2 and Fig. 4 is a sectionalelevation ot the condenser in a modiled form.

Similar letters of reference designate corresponding parts in all thefigures.

A designates a drying-room ordrying-honse, composed of four walls ofbrick or other material roofed over, and about midway of the heightofsaid room or house is a tier of beams, A,t'oruiin g a rack,upon whichlumber maybe laid.

Upon the iioor of the room or house A is a steam-radiator, B, the pipesof which extend back and forth for the whole width and length ofthe roomor house, as best seen in Fig. l.

In the end of the room or house are two chambers or inclosures, C C', orthey might otherwise be called a single ch amber,77 divided by apartition, C2, as seen in Fig. 3, and communicating with each other overthe top of said partition. As here shown, said chambers C C' only extendupward to the rack A', and they are separated or divided from the mainportion of the room or house. Arranged in 4said chambers C C are tworadiators, D D',

here shown as composed of connected parallel tubes, as best seen in Fig.3.

It is very desirable, in order to make the steam tosupply the radiatorsB D D as effective as possible, that it should be superheated, and Ihave represented a superb eater, E, which may be heated by a furnacebelonT it, and ot' any suitable construction, as may be found mostdesirable, and steam is conducted from any suitable and adjacent boilerto the superheater through a pipe, a, as shown in Fig. l, under controlof a valve, a', therein. From the superheater E the snperheated steampasses through a pipe, b, to one end of the radiator B, under control ofa proper valve, '11', (best shown in Fig. 1,) and from the opposite endof said radiator the water-of condensation passes to the boiler or thetrap through a pipe,`o, as seen in Fig. l.

Steam is supplied to the two radiators D D by means of pipes o and d,under control of valves, and as clearly shown in` Fig. l, and thecondensed water is exhausted therefrom through a pipe, d2, (shown inFig. 3,) to a boiler or a trap, (not here shown.)

I will now proceed to describe the course ot' the air in passing throughthe drying room or house.

F designates the blower, by which air is withdrawn from the upperpart ofthe room or house, and from which the outflow of air is conducted intothe lower part thereof. rlhe suction-pipe G of the blower F extends npward therefrom and along the upper part of the dry room or house, uponone side thereof, and the discharge-pipe H from said blower terminatesin the chamber C, as best shown in Figs. 2 and 3.

The suction-pipe G of the blower, whereby air is withdrawn from the topof the drying room or house, is provided with numerous inlets e, whichmay be provided with dam pers or valves, whereby the quantity of airdrawn from any part of the room or house may be conveniently regulated.

The air delivered into the chamber C from the dischargepipe H p'assesfrom said chamber over the partition O2 into the chamber O', and in itspassage is heated by the radiators D lD', after which said air passesfrom the chamber C into a horizontal pipe or trunk, I,

which extends lengthwise of the drying room or chamber, in the lowerpart thereof, and on the opposite side from the air-suction pipe Gr, asshown clearly in Fig. l. The pipe or trunk I has its upper part composedof hinged sections ff f2 f3, which may, any one or all of them, beraised or opened to permit the passage of air into the room or house atany desired point below the radiator B, whence the air passes upwardthrough and in contact with the pipes of the radiator, and is therebyfurther heated. Y

` It is desirable that the air employed in drying be freed as far aspossible from moisture, and to enable this to be done I employ acondenser, J, here shown as consisting of a simple box or chest having4arranged within it a coil or series of cold-air pipes, of which J isthe inlet-pipe and J2 is the outlet pipe or due. The outlet-pipe J2 isprolonged upward above the condenser, and into it extends a branch pipe,K, leading from the furnace, which heats .the superheater E, aspreviously described. The ascending current of tbek hot air and productsof combustion, passing from the furnace of the superheater E, and thencethrough the branch pipe K and outlet pipe oriiue J 2, produce a constantflow of air from the coil or pipes of the condenser and a constant nowof cold air through the same, which cold air enters.

at the inlet J. The body or shell of the condenser J is connected by apipe, L, with the suction-pipe G of the blower F, andby a pipe, E, withthe dischargepipe H from the blower, and while the mainior largerportion of the air is kept circulating through the blower 'Fand itssuction and discharge pipes Gr and H, a smaller proportion or quantitythereof is kept circulat ing through the pipes L L and condenser J,whereby it is rid of its moisture, thus-maintaining a uniform humidityof the air used in drying. The pipes L L are provided with suitablegates or valves for regulating the iow of air through them.

If water were used as a condensing agent in 4 5 the condenser J, the airwould pass through the pipes or coils of the condenser, instead ofthrough the condenser around said pipes or coils.

`By my invention I provide for properly regulating the supply of heatedair to all parts of the dry room or house, and also for ridding the airused yin drying, as far as is possible, from its moisture.

In the condenser shown in Fig. 4 the air passes. through a pipesurrounded by water in the body of the condenser. In case it should befound desirable to introduce a small quantity of steam into directcontact with the lumber in the drying room or house, I may employ pipess,'arrangedabove the radiator B and supplied wth steam from thesuperheater E. The pipes s may beperforated, if required.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination, with the drying room or house A, of the radiators BD D', arranged substantially as herein described, and thesuvperheaterfor supplying superheated steam to said radiators.

2. 'Il he combination of the room or house A, the chambers C C',separated by a partition, G2, the radiators D D', arranged in saidchambers, the-blower F, the suction-pipe G, the dischargepipe H,'leadingto the chamber C, and the airtrunk I, leading from the chamber C', andpro- .Vided with gates or valves along its length, all

substantially as specified. V

3. The combination of the condenser J, having an air-inlet, J', and anair-outlet, J2, the

l-superheater E, heated by a furnace, and the escape pipe or `flue K,leading from said furnace '.to` the outlet J2, substantially asspecified.

EDGAR J. WOOD. i

' Witnesses:

FREDK. HaYNEs, En. GLATzM-AYER.

